GB1266673A - - Google Patents

Info

Publication number
GB1266673A
GB1266673A GB1266673DA GB1266673A GB 1266673 A GB1266673 A GB 1266673A GB 1266673D A GB1266673D A GB 1266673DA GB 1266673 A GB1266673 A GB 1266673A
Authority
GB
United Kingdom
Prior art keywords
valve unit
chambers
diaphragm piston
movement
cylinders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3100269U external-priority patent/JPS5043660Y1/ja
Application filed filed Critical
Publication of GB1266673A publication Critical patent/GB1266673A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
    • B60T8/266—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means
    • B60T8/268—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels using valves or actuators with external control means using the valves of an ABS, ASR or ESP system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4208—Debooster systems
    • B60T8/4225—Debooster systems having a fluid actuated expansion unit
    • B60T8/4241—Debooster systems having a fluid actuated expansion unit pneumatically
    • B60T8/425—Debooster systems having a fluid actuated expansion unit pneumatically using a vacuum
    • B60T8/4258—Debooster systems having a fluid actuated expansion unit pneumatically using a vacuum with brake pressure relief by creating vacuum inside the expansion unit

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)

Abstract

1,266,673. Antiskid brake mechanisms. AISIN SEIKI CO. Ltd. 9 March, 1970 [8 March, 1969; 5 April, 1969], No. 11272/70. Heading F2F. An antiskid brake control mechanism in an hydraulically operated vehicle braking system comprises a first pneumatic servo mechanism 38 having a diaphragm piston 41 establishing two variable volume chambers 38a, 38b in the mechanism 38, a check valve unit 78 actuable by movement of the diaphragm piston 41 and intended to allow or cut off hydraulic flow between a master cylinder 31 and rear wheel brake cylinders 18, a second servo mechanism 19 having a diaphragm piston 21, 22 establishing two variable volume chambers 11a, 11b, a plunger 12 actuable by movement of the diaphragm piston 21, 22 to increase or decrease the volume of the connection between the master cylinder 31 and the brake cylinders 18, the servo mechanisms 38, 19 being operated by a changeover valve unit 50 on receipt of an electric signal from a skid sensor 66. As shown in Fig. 1, chambers 38a, 38b and 11b are normally connected to a vacuum source 46 and chamber 11a is connected to atmosphere via valve unit 50. In a braking action and upon a skid being sensed a signal is sent from sensor 66 to a solenoid coil 64 of the valve unit 50, this causes movement of a hollow plunger 59 to connect chambers 38b and 11b to atmosphere and chamber 11a to vacuum source 46. Pressure differentials are thereby established on either side of the diaphragm pistons 41 and 21, 22: the diaphragm piston 41 moves to the right to close valve unit 78 by movement of a valve member 26 and thereby break off hydraulic connection between the master cylinder 31 and the cylinders 18; the diaphragm piston 21, 22 moves to the left to thereby move plunger 12 so that the increasing volume causes the pressure at cylinders 18 to be relieved, and the brakes taken off. As shown in Fig. 2 the chambers 116<SP>1</SP> and 386<SP>1</SP> are interconnected by a duct 101 for the simultaneous admission of atmospheric pressure to both upon a skid being sensed.
GB1266673D 1969-03-08 1970-03-09 Expired GB1266673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2081869 1969-03-08
JP3100269U JPS5043660Y1 (en) 1969-04-05 1969-04-05

Publications (1)

Publication Number Publication Date
GB1266673A true GB1266673A (en) 1972-03-15

Family

ID=26357807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266673D Expired GB1266673A (en) 1969-03-08 1970-03-09

Country Status (2)

Country Link
US (1) US3667811A (en)
GB (1) GB1266673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109572649A (en) * 2018-12-30 2019-04-05 吉林东光奥威汽车制动系统有限公司 A kind of Motorized vacuum apparatus for controlling pump adapting to plateau and plains region

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810520A (en) * 1970-12-28 1974-05-14 Tokai Rika Co Ltd Automatic damping device for braking a vehicle
JPS4840025A (en) * 1971-09-25 1973-06-12
US3715145A (en) * 1971-09-30 1973-02-06 Gen Motors Corp Hydraulic anti-lock brake control system
DE2156307C2 (en) * 1971-11-12 1982-10-21 Alfred Teves Gmbh, 6000 Frankfurt Anti-lock device for automobiles
GB1510632A (en) * 1974-05-18 1978-05-10 Girling Ltd Modulator assemblies for vehicle hydraulic braking system
DE3625960A1 (en) * 1986-07-31 1988-02-11 Teves Gmbh Alfred BRAKE-SLIP CONTROL VEHICLE BRAKE DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109572649A (en) * 2018-12-30 2019-04-05 吉林东光奥威汽车制动系统有限公司 A kind of Motorized vacuum apparatus for controlling pump adapting to plateau and plains region
CN109572649B (en) * 2018-12-30 2023-10-24 吉林东光奥威汽车制动系统有限公司 Electric vacuum pump control device suitable for plateau and plateau areas

Also Published As

Publication number Publication date
DE2010975A1 (en) 1970-10-01
US3667811A (en) 1972-06-06
DE2010975B2 (en) 1977-03-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee